Floor polishing machine



oct. 11, 1932. C, H, BEAH 1,882,471

FLOOR POLISHING MACHINE Filed Feb. 8, 1928 2 Sheets-Sheet 1 C lzeste 319067Z,

liz/den far.'

c. H. BEAc'zH 1,882,471

FLOOR POLISHING MACHINE Oct. 1l, 1932.

Filed Feb. 8, 1928 2 Sheets-Sheet 2 FL G, j

50 271 fe/z 6h65 #er 5y ama w iwf.

Patented Oct. 11, v193;?

- UNITED sTATEs PATENT OFFICE CHESTER H. BEACH, F. RACINE, WISCONSIN, ASSIGNOB, BY MESNE ASSIGNMENTS, T0

'a B. C. JOHNSON SON, OF RACINE, WISCONSIN, A FIRM FLOOR POLISHING MACHINE Application illed .'rebruau'y 8, 1928. Serial No. 258,804.

connected to the frame in a fixed position v thereon and supporting the frame at its rear end from the floor, an electric motor carried by the frame and having its shaft arranged parallel to the brush axle, and a drive connecting the motor to the brush to drive the same.

The invention has an object to provide a floor polishing machine which is simple in construction and economical to manufacture.

Another object is to provide a floor polishing machine which is compact and eilicient.

Another Iobject is to provide a ioor polishing machine which may be readily and easily assembled and disassembled.

Another object is to provide a floor polishing machine from which either the motor or the brush may be readily removed.

Another object' is to provide a floor polishing machine which is light in weight and which imposes a light weight upon the hand of the operator. Another object is to provide a floor polishing machine which may be readily moved and guided and readily carried from place to place.

Another object is to provide a floor polishing machine which may be used to polish small spaces and which may be passed under low furniture and other low objects.

Other objects of the invention will appear fromthe floor polishing 4machine which is vhereinafter described.

According to the invention in its general aspect and as ordinarily embodied in practice, a Hoor polishing machine such as has been heretofore dened is provided with a frame having a clamp to connect the motor thereto in a fixed position behind the brush.

According to the invention in another aspect, the vbrush has its axle arranged in a slot formed in the frame and havin an open front end, and the motor and the rush are connected by an elastic belt to retain the axle in the slot. v

A floor polishing machine constructed in accordance with the ,invention is illustrated in the accompanying drawings in which the views are as follows:

Fig. l is a side elevation of the machine; Fig. 2 is a side view with the near side plate removed; y

Fig. 3 is a top plan view partly in section;

Fig. 4 is a vertical section on 'the line 4 4 of Fig. 2;

Fig. 5 is a top planview.

The floor polishing machine is supported at its front end by a cylindrical brush or rubber having a tubular core or hub l0 which rotates upon a horizontal axle 11 and has its outside between its ends provided with bristles 12.

The axle extends through the brushl and is provided at each of its ends with a bearing 13 which is retained in position Withinl the end of the hub 10 to support the brush upon the axle and enable it to rotate thereon.

The axle is provided upon each of its ends with a head 14 and it is grooved or flattened immediately behind the head to reduce it in diameter and to provide diametrically opposed {iat surfaces 15.

The brush is carried by a frame 16 which is provided at each of its sides with a side bar 17 having an open slot 18 formed therein and extending rearwardly from the front end thereof.

The axle is supported by the side bars 17 and has the reducedv part at each of its ends arranged in a slot 18.

The axle is prevented from rotatin by the fiat surfaces 15 engaging the sides o? the slots and is restrained from axial movement Aby the heads 14 engaging the outer faces of asV , -22 which is secured thereby in position upon the frame 16.l

The motor 22 has its shaft 23 arranged parallel to the axle l1 and provided upon each e of its ends with a belt pulley 24.

The hub 10 of the brush is provided near each of its ends with a roove 25 having arranged therein an elastlc belt 26 which extends over a pulley 24'and connects the brush to the motor.

The motor drives the brush throughthe elastic belts 26 which have sufficient tension to maintain traction with pulleys 24 and the grooves 25 and to keep the axle 11 against the rear ends of the slots 18.

The brush may be removed from the frame by simply disengaging the elastic belts from the hub and sliding the axle out of the slots.

The machine is supported at its rear end and guided by a handle 27 which is fastened in the socket 21 formed by the ends of the clamp 19.

The handle is clamped in the socket by a bolt 28 which extends therethrough and also tightens the clamp 19 to hold the motor therein.

The motor is restrained from axial displacement by two s aced annular ribs or shoulders 29 which are ormed upon its casing and engage the edges of the clamp 19.

The machine ma be provided with an outer casing which as a' flanged side plate 30 arranged along each side of the machine and connected to each other by a top plate y31 arranged over the top of the machine.

The side plate 30 encloses the motor pul- I ley andthe end ofthe brush and is connected to the side bar 17 by screws 32.

The motor is supplied with current through a conductor 33 which passes to the inside of the motor through a bushing 34 arranged in its casing.

The conductor is supported from the handleV by eyelets 35 or other fasteners and is provided at its free end with a connector 36.

The motor is controlled by a switch 37 which is connected to the conductor and carried by the handle.

The machine may be provided at its forward end with bumpers 38 of rubber or other suitable substance to protect walls and furniture when the machine is being operated and upon which the machine may be supported when not in operation to remove the weight from the brush.

Such a ioor polishing machine as is set forth herein has its use facilitated by various characteristics which are attributable to the frame being supported at its front end by the brush and at itsrear end by the handle and to the motor being arranged adjacent the brush with its shaft parallel to the axle thereof.

As a light motor suices to give the brush sufficient pressure to polishV the oor, the machine as a whole is light, and thereby may be readily moved and guided and carried from place to place.

As the motor has its weight carried primarily bythe brush, the handle imposes a very light weight upon the hand of the operator.

As the frame may be lowered by the handle, the machine may be readily passed under low furniture and other low objects.

As merely the brush bears upon the floor, the machine may be utilized to polish small spaces.

The invention herein set forth is susceptible of various modifications within the scope` of the appended claims.

The invention is hereby claimed as follows 1. A ioor polishing machine, comprising a frame having a slot extending rearwardly from the front end thereof, an axle carried by said frame and arranged in said slot, a flat surface upon said axle engaging the side of said slot to prevent said axle from rotating therein, means to restrain said axle from axil movement within said frame, a cylindrical brush rotating upon said axle and solely supporting said'frame at its front end from the floor, a motor carried by said frame and arranged behind said brush with its shaft parallel to said axle, an elastic belt connecting said motor to said brush to drive the same and to retain said axle in said slot, and a handle to guide said machine. and to support said frame at the rear end thereof.

2. A ioor polishing machine, comprising a cylindrical brush having a horizontal axle',

a frame connected at its front end to said axle and freev to pivot in a vertical direction thereon and having slots in the front end thereof to receive said axle, a handle connected to said frame in a fixed position to support said frame at its rear end from the 'i floor, a motor carried by said frame and supported from the Hoor at its front by lsaid brush and at its rear by said handle and having its shaft parallel to said axle, and elastic belts connecting said brush and said motor upon each side thereof to drive said brush and to hold said axle in said slots.

3. A floor polishing machine, comprising a cylindrical brush having a horizontal axle, y

a frame connected to said axle and free to pivot in a vertical direction thereon and having slots in the front end thereof to receive said axle, a head on each end of said axle to retain the same against axial movement, a substantially annular motor support carried by said frame and forming a part thereof, a handle connected to said support in a fixed position to support said frame at its rear end from the oor, a motor arranged within said support and having its shaft parallel to said axle and elastic belts con-y necting said brush and said motor upon each side thereof to drive said brush and to hold said axle in said slots.

4. A floor polishing machine comprising a frame having slots extending rearwardly from the front end thereof, an axle supported in said slots and held against rotation by flat surfaces on said axle engaging the sides of said slots, heads on the ends of said axle to prevent axial movement thereof, a brush rotating on said axle and solely supporting said frame at its front end from the floor, a motor carried by said frame at the rear end thereof and having its shaft parallel to said axle, elastic belts connecting said motor to said brush to drive the same and to retain said axle in said slots, and a handle for supporting said frame at its rear end from the iioor and for moving and guiding lthe machine. l y

5. A iioor polishing machine comprising a frame having slots extending rearwardly from the front end thereof, an axle supported in said slots and held against rotation, a brush rotating on said axle and solely supporting said frame at its front end from the iioor, a motor carried by said frame at the rear end thereof and having its shaft parallel to said axle, a handle arranged at the rear of said motor and connected thereto and 'to said .frame in a xed position and free to pivot vertically therewith upon said axle, and elastic belts connecting said motor to said brush to drive the same and to retain said axle in said slots.

6. A ioor polishing machine comprisinga frame having slots extending rearwardly from the front end thereof, an. axle supported in said slots and held a ainst rotation, a head on each end of said ax e to retain .the same against axial movement, a brush rotating on said axle and solely supporting said frame at its front end from the viioor, a motor carried by said frame at the rear end thereof and Vhaving its shaft parallel to said axle, a handle arranged at the rear. of said motor and connected thereto and to said frame in a fixed position and free to pivot vertically therewith upon said axle, and elastic belts connecting said motor to said brush to drive the same and to retain said axle in said slots.

7. A ioor polishing machine comprising a' frame having a 'rear cross bar and side bars carried thereby, an axle supported in said side bars, a cylindrical brush arranged on said axlel and/supporting the machine from the floor, a motor having its shafts arranged parallel to said axle and connected by belts to said brush to drive the same, a strap clamp attached to saidy cross bar and surrounding the body of said motor intermediate the ends -thereofto support the same, a handle for l -scribed my name.

guiding the machine, and means to secure said handle and said motor in said clamp.

8. A floor polishing machine comprising a frame havin a rear cross bar and side bars carried there y, an axle supported in said side bars, a cylindrical brush arranged on said axle and supporting the machine from the door, a motor having its shafts arranged parallel to said axle and connected by belts to said brush to drive the same, va strap attached intermediate its ends to said cross bar and surrounding said motor to support the same, a socket formed by the ends of said strap, a handle arranged in saidsocket for guiding the machine, and means to clamp said motor in said strap and said handle in said socket.

9. A floor polishing machine, comprising a cylindrical brush having a horizontal axle, a frame connected at its front end to said axle and free to pivot in a vertical direction thereon a motor arranged at the rear of said frame and having its shaft parallel to said axle, a clamp carried by said frame to em- 'brace said motor intermediate its ends and having a socket formed between the ends thereof behind said motor, a belt connecting said motor to said brush, and a handle connected to said clamp by said socket to support said frame at the rear end thereof.

l0. A floor polishing machine, comprising a frame having slots extending inward from the front end thereof, an axle supported in said slots and held against rotation b fiat faces on said axle engagin the sides o said slots, heads on the ends o said axle to prevent axial movement thereof, a brush rotating on said axle and solely sup orting said frame at its front end from the oor, a motor arranged at the rear of said frame, a clamp embracing said motor and connected intermediate 1ts ends to said frame, a socket formed b said clamp behind said motor, elastic belts connecting said motor'to said brush to drive the same and retain said axle in said slots, and a handle connected to said clamp by said socket to support said frame at its rear end from the floor.'

A 11. A floor polishing machine, comprising a cylindrical brush having a horizontal axle, a frame having side bars connected to said axle and free to pivot upon said axle in a vertical direction, a clamp arranged midway between said side bars and extending rearwardly from said frame, a handle connected to said frame in a fixed position by said clamp .to support said frame at its rear end from, the floor, a motor carried b said clam .with its shaft parallel to said ax e and a be t s connecting said brush to said'motor.

In witness whereof, I have hereunto subormsTER H. BEACH. 

